Rotatable coupling



evor, the invention is not liTnited to the uSe in a plaStic eXtpuder but Inay be used f()f ofher ServiceS Such aS the loading of aspha.lt thfoogh a rotating i()int of the feeding of highly viScous Iflaterial Such aS a pfain vv ax to centfifuges of othef deviceS Whefein a Totafin'g ioint iS desffod.

While there haS been deScrfbed what iS at pTesent a pfeferfed eIT1bodi n1ent of the )feSent invention, it WiH be oppafent to thoSe Skilled in the aft that various n1odinca tionS and changes Inay be In ade Without depaTting froIn the eSSence of fhe )feSent invention.

What is claimed iS:

1. A fotEtable collpling having 'an aXial opening therein for oonveying vis'cous Inaterial at high te n efatufe and pressufe oompriSi1g= (a) a ()ne piece Station afy baSe inoluding,

(i) a lovver oftion adaptod to be ooUpled to an otheT object,

(ii) an uppef portion having ^an annulaT fecesS pfovided in the top face thereof denning an outer vvall Section and, t()gether vvith said aXfal ()pen ing, an annulaf inner waH Section, Soid outef wan Section and inne1 Wan Section being inte gra.1ly foTmed;

(ifi) a ol uTality of openings being provided in Said ontef wall Section having their innef ends teFIninating adiacent the baSe of said inner wall sectfon;

(b) a rotatable sp oft 'assenfbly incloding (i) a central cylindrical poftion providing a coaxiaI cyllindrioal receSS in the botton thefeof Teceiving said annular inner wan section of Said base, the inner waHS of Said cenal cylindrical portion provided by s2Lid recess and the facing WaHS of said inner wa11 Section being very closely spaced and free ffom any nuid SeaHng IneanS vhefeby a sn1 aH quantity of said viScoUS Huid Howing thTough Said axial opening Wm f1ovv between the cloSely Spaced waHS to fubri cate the WallS and purge the Space therebetvveen and exit ffoIn safd coupling thfough Said p1U Tality of openings in said outer waH Section, Said cynndfioal portion being provided with a fadi aHy extending ring on the bottom poftion there of vvhich subStantially oocupies the Space betWeen the oter wan Section and the innef waH Sectio n;

(ii) eaTing moanS ioining, and ouppoTting in Spaced opaft TelationShip, Said stationary base and said centfal cylindrical po-rtion of Said S11ppoft aSseInbly, said bearing nleans feceived in an annular space pfovided between Sa id stationary base and said centfal cylindTical poftion of said Support asSelnbly, Said bearilg Ine ans incIUding at le ast one Seal Ting at the 1o-Wer end the1eof to pfevent said viSCous Inatefial ffon1 contacting the inner portfonS of Said beafing aSSen1bly, and

(iii) Ineans to oouple Said snppoft aSSeInbIy to anotI11e obiect.

Z. The couping deHned in claifn 1 wherein Said bear ing IneanS iS o fe novab1e roHef bearing aSSemb1y.

3. The copHng defined in claim Z wherein Said bearing aSSen by iS Seated on oppoSitely diSposed shouldeTS pfo vided on the outoT WaH of Said centDal cylindrical orti0n of Said s uppoft asSem bly and on the annulaf intefiof vvaH of said outef waH Section of Said uppef portion of Said baSe.

4. The cop1ing defined in clai m 1 Whefein said annlar inner vvan Section of said baSe and said centraI cylindrical poftion of Said Su port aSSembly afe sepa rated fTom each other by a spacing of fFom obo11t 0.001 inch to about 000S inch. v

5. The coII ling definod in clain1 1 including IneanS for enga'gin g said rotatable suppoft aSSen1bly vvith a Source of fotation al130Wef.

6. The o0 hng of clain] 1 Wherein safd waHS of both Said centfal cy1fndfical portion provided by said receSS and Said facing wans of said innef wan Section include longitudinany extending cyIindrical Side vvallS feDn1inating in tfanSverSely eXtending annulaf end wanS.

7. T he co11'p1ing of cfain1 1 Wherein said quantity of viscouS nuid f1ovVing between Said facing wallS is about onehalf onlnce per houf When Said viSco11S Inateffa1 iS lo W density polyethylene.

11eferenceS (:ifod

UNITED STATES PATENTS L15L334 8/1915 Ben Z8Z7S L3Z4,967 12/1919 Hofing Z134 1.703.823 2/1929 ]ohansen 28514 1,883,09 10/193Z Boone Z8Z8O X Z,144 117 1/1939 Minef Z8SZ75 Z.388.798 11/194S Pofker 285276 X Z.4Z9.9Z9 10/ 1947 Fishef Z85Z76 X Z.717,166 9/195S Hedden 285276 X Z.906,548 9/1959 Fa coou Z8514 3,lZ9.960 4/1964 Schrodt Z8514 X THOMAS F. CALLAGHAN, Pri-mar Examiner U.S. CL X.R.

UNITED STATES PATENT OFFICE CERTIFICATE OF CORBECTION Patent No. ,62 174 Dated AUguSt 9, 959

Inventor s Garand E. Raley It iS cert1fied that error a ears 1n the aboveidentified atent and that sa1d LetterS Patent are hereby cortected aS Shown beloW:

CO1umn 1, ne 58, readS Ttatn orton Should read rotatin orbionS co1umn 1, ine 61, readS reaSnabe 1On Should read reaSonabl 1on cumn 2, 1ine 59 readS ortab1e cu n Shud read rotatable cu ing Column ine 52, readS S threaded Shud read S threadabl Column ne 6 readS "C ndrca Should read c 1indrica1 ortion 0 CO1umn ne 12, readS c ndrca receSS 1 shud read C 1ndrCa wa11 Section 26 and the Sde Wa of c 1ndrCa receSS column 1ine 1, TeadS "of Stain1eSS Should read of a StaineSS Co1umn 6, ine 2 de1ete the word bth SmNED ^ND SEALED 

